ACL Reconstruction in the Skeletally Immature. Where We ve Been, Are and Going to
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1 ACL Reconstruction in the Skeletally Immature. Where We ve Been, Are and Going to 1st Annual International Extreme Sports Medicine Congress Jay C. Albright M.D. Surgical Director Sports Medicine Children s Hospital Colorado Assistant Professor, CU, Department of Orthopedics
2 Disclosure Speaker Arthrex, DJO
3 Where have we been Agenda Identify the past ideas and approaches Is this where we should be Where we are Surgical indications Approach to decision making for surgical technique Where are we going Reapplying old ideas into new techniques 3
4 Where have we been Agenda Identify the past ideas and approaches Is this where we should be Where we are Surgical indications Approach to decision making for surgical technique Where are we going Reapplying old ideas into new techniques 4
5 ACL-Scope 150,000+ reconstructions/yr in USA 3-4% skelletally immature ½ have meniscal tears Lipscomb (JBJS 1986)
6 Female ACL Injury Epidemiology NCAA Surveillance Studies 2x 8x increased risk basketball, soccer Pediatric & Adolescent Shea et al (POSNA 2005)
7 Traditional Care Too young Wait No Cutting Sports PT Bracing 7
8 Treatment Non-operative: Mizuta et al (JBJS-B 1985) 1/18 return to preinjury sport level, 6/18 meniscal tears McCarroll et al (AJSM 1988) 3/16 return to preinjury sport, 4/16 meniscal tears Angel & Hall (Arthroscopy 1989) 5/7 failure (ACL reconstruction) Graf et al (Arthroscopy 1992) 7/8 failure (ACL reconstruction, meniscal tears) Janarv et al (J Pediatr Orthop 1996) 16/23 failure (ACL reconstruction) Millett et al (Arthroscopy 2002) medial meniscus tears with delay in treatment
9 Ganley et al: Comparison of early (<3 months) Or Delayed (<6 Months) Found up to 10x increased rates of cartilage damage or irreparable meniscal tears Anderson, personal communication: similar findings Treatment
10 ACL-Decision Making Surgery: Fail non-operative course Any Meniscal injury at least to preserve mensical function Those who refuse to limit high demand sports Counsel on risks of surgery prior to end of growth Growth abnormality Risk of short-term stabilization and possible future revision
11 Where have we been Agenda Identify the past ideas and approaches Is this where we should be Where we are Surgical indications Approach to decision making for surgical technique 12
12 Treatment decision 8 Year old Male Young 5 or more years of growth remaining Tanner 1-2 Options=Physeal Sparing Soft tissue transphyseal?
13 Eight year old male Evaluate remaining growth potential Chronologic age Menstral history Bone age Elbow/wrist films Growth charts over time Tanner Stage pubic hair Comparison to family height Growth plate appearance Radiographic/ MRI Size of Epiphyseal bone
14
15 Physeal-Sparing Reconstruction hyseal-sparing ACL Brief (Arthroscopy 1991) 6 pts; 3-6yr F/U: 6/6 laxity, 1/6 instability Guzzanti et al (AJSM 2003) 8 pts, tibial tunnel; 2-7yr F/U: 1/8mm laxity, 0/8 instability Anderson et al (JBJS 2003) 12 pts tunnels; 2-8yr F/U: 1.5 laxity, 0/12 instability Kocher et al (JBJS 2005) 44 pts. ITB extra & intraarticular; 2-15 yr F/U: 4.5% revision
16 17
17 12 year old Female 3-5 Years growth remaining Elbow Growth Plates not Closed Options All-epiphyseal Partial Transphyseal Soft Tissue Transphyseal Quad with or without patella
18 15 year old Male <3Years growth remaining Elbow Growth Plates now Closed Options All-epiphyseal Partial Transphyseal Soft Tissue Transphyseal Quad with or without patella
19 ACL Reconstruction Transphyseal ACL Not OK Campbell 1959 and Osterman 1994 Heuter Volkman 1862 Edwards 2001, Maketa 1988, and Guzzanti 1994 Wester 1994 OK Lipscomb & Anderson (JBJS-A 1986) McCarroll et al (AJSM 1994) Matava & Siegel (Am J Knee Surg 1997) Aronwitz et al (AJSM 2000) Lo 1997, Bisson 1998, Noyes 1994 Soft tissue interposition with graft prevents osseus bridging in small defects Stanitski 1959, Osterman 1994, Stadelmaier 1995
20 Palleta, 2010, Presentation Growth Disturbance 10 year experience with T 1-2 ~ 50 Followed to near skeletal maturity Transphyseal HT No disturbance
21 Where have we been Agenda Identify the past ideas and approaches Is this where we should be Where we are Surgical indications Approach to decision making for surgical technique Where are we going Reapplying old ideas into new techniques 22
22 Quad As a Graft 23
23 Why look? Females Suggestions against use of hamstring autograft due to neuromuscular disadvantage. Recent study Retear rate 12% males but 22% Females Allograft Recent reports of up to 55% re-tear in younger population Singhal et al Arthroscopy 2007 Growth BPTB difficult to use in all epiphyseal and will be more likely to stop growth when used across physis
24 Autograft ITB Hamstring BTB QTB Graft Choices Perceived Draw Backs? Strength? Weakness Growth arrest Ant knee pain Patella Fx Growth arrest Quad weakness Patella Fx
25 What about the quad as a graft Stronger with the patella still attached Without is still more than twice as strong as native ACL Comparable to BPTB and Hamstring with regard to overall strength Less strength per unit area but more unit area per size of graft Harris NL et al. AJSM 1997 and Staubli et al AJSM 1999
26 Comorbidities? No permanent weakness Hamstring Same rate of anterior knee pain as previously reported for allograft ~8% Similar re-tear rate 5-7% Han et al CORR 2008
27 Harvesting
28 All-Inside
29 Two Femoral options 30mm 10-12mm 10-12mm 30
30 Tibial side A drill bit and guide are placed through the medial portal and positioned on the tibia 6-8mm anterior to the PCL In the posterior portion of the ACL footprint At the posterior aspect of the anterior root of the lateral meniscus
31
32 Results Trans-Physeal Quad-Patella 100 patients with minumum 2 year followup currently being looked up Preliminarily, only 3 graft failures (both at 15 months) Post op ~93/100 returned to same level of sport No premature growth arrests partial or complete
33 Conclusions Recommendations Know Growth Remaining Shared Decision Making Risks: Non-operative Treatment Meniscal/ Chondral Injury Risks: Operative Treatment Growth Disturbance Understand Pediatric Knee Anatomy Distal Femoral Physis & Over-Top Proximal Tibial Apophysis
34 ACL-Recommendations Extra-articular/OTT avoid dissection or elevation of physis peripheral physeal damage, most dangerous Salvage Menisci Do Not cross physis with fixation or bone plugs Place tibial hole in most central/posterior portion of ACL footprint as possible Start tibial drill hole as far distal as possible decrease size of defect in physis as more perpendicular Avoid over constraining Small tunnel
35 Conclusions Long-Term Complications of Pediatric Knee Injuries ACL Reconstruction Arthritis Stiffness, Pain, Retear Graft Meniscal Injury Discoid Lateral Meniscus: Uncertain Complete Menisectomy: Arthritis Partial Menisectomy: Uncertain Chondral Injury Cartilage Injury: Arthritis OCD: Arthritis
36 Future Direction Investigate strength of fixation constructs Would like to avoid needing to use aperture screw fixation Decrease risk of growth arrest on Tibia
37 Thank You
38 Graft Choices Allograft N/(N/mm) Tib A, Post T, PL 3000/300 Hamstring 4090/776 BTB 2900/ QTB 3500/
39 The Child s ACL Where We ve Been, Are and Going To Jay C Albright, MD Surgical Director Pediatric Sports Medicine Children s Hospital Colorado
40 Disclosure Arthrex Speaker Honoraria
41 An ACL Case Gone Bad
42 Treatment Algorithm 2?-3? Years growth remaining All-epiphyseal Partial Transphyseal Soft Tissue Transphyseal Quad with or without patella
43 Treatment Algorithm Not as young Tanner years of growth remaining Transphyseal
44 Evolution Graft Choices Have heard of others Here is another viable option For the middle to older adolescent
45 Why look? Females Suggestions against use of hamstring autograft due to neuromuscular disadvantage Allograft Recent reports of up to 55% re-tear in younger population Singhal et al Arthroscopy 2007 Growth BPTB difficult to use in all epiphyseal and will be more likely to stop growth when used across physis
46 Graft Choices Reinhardt et al, Graft selection for ACLr: A Level I Sys Review 10 6 studies qualified BTB 11 failures (7.2 %) HT 26 (15.8%) p = 0.02 If eliminate 2s HT studies BTB 4/106 (3.8%) HT 4s 12/110 (10.9%)
47 Graft Choices Reinhardt et al, Graft selection for ACLr: A Level I Sys Review 10 6 studies qualified Strength Variable ½ NS diff ½ HT (2 or 4s) Weaker at final follow-up
48 What about the quad as a graft Stronger with the patella still attached Without is still more than twice as strong as native ACL Comparable to BPTB and Hamstring with regard to overall strength Less strength per unit area but more unit area per size of graft Harris NL et al. AJSM 1997 and Staubli et al AJSM 1999
49 Comorbidities? No permanent weakness Hamstring Same rate of anterior knee pain as previously reported for allograft ~8% Similar re-tear rate 5-7% Han et al CORR 2008
50 Graft Choices Allograft Barrett et al BTB auto vs allo fresh frozen FF x higher failure than auto in higher tegner/younger patients (<40) Singhal et al 23 % failure with 38% re-operation in frozen soft tissue <25 yo Gorschewsky et al 2 studies showing high failure in young patients returning to level I ACL dependent sports
51 What about growth
52 Growth Disturbance Physeal defects okay: No leg length disturbances Aicroth 2002, Aronowitz 2000, Matava, Siegel 1997, McCarroll reruptures with activity Majority close to skeletal maturity Soft tissue interposition with graft prevents osseus bridging in small defects Stanitski 1959, Osterman 1994, Stadelmaier 1995
53 13 Yr Old Female Soccer Player Travel Select State Team BA 13 Olecranon Apophysis Closing
54 Harvesting 3-4 cm incision 12-15mm bone (imm) 75-80mm graft length ¼ inch curved osteotome Strip proximally Close tendon Fill bone defect with Allograft or substitute later Diagrams from Han et al
55 Load the graft onto a Chinese fingertrap shortening device
56 Tunnel Prep Femoral Options Acorn reamer Low profile Reamer Flip cutter Especially revisions
57 Tunnel Prep In Skeletally immature Femoral tunnel depth needs to be 30mm 3 mm distance of the perichondral ring to the over the top position Average distance from joint to superior aspect of growth plate in tunnel Posteriorly = 5mm Anteriorly = 10mm
58 Tunnel Prep Tibia Antegrade/intraarticular cutter Depth so no bottoming out of graft
59 Pass Graft Standard Into femur first Flip button Shorten device fully to seat bone block at top of tunnel
60
61
62 Pass Graft Into tibia Fix with aperture screw Check to make sure screw not crossing growth plate Back screw by tying sutures in graft over button
63 Title of slide
64 Title of slide
65
66
67 From the inside
68 What now
69 What Now
70 Fixation Gone New Graft? New Fixation? Skeletally immature
71 Whip Stitch
72 Whip Stitch, Hay Bail, Rip Stop,.
73 Whip Stitch, Hay Bail, Rip Stop, New Button Fixation, Hail Mary
74 Rehab Hinged Post op knee immobilizer WBAT Immediate PT FROM no meniscal repair Goal 0-90 within 1 week
75 Rehab Immediate SLR, Quad Sets No meniscal repair, out of brace 75 perfect SLR
76 Rehab At 3 Months post op ACL brace Jogging At 4-6 months Sprinting At 5-8 months Cutting/twisting
77 RTP? For my patients PT functional tests within 85-90% opposite leg My manual muscle test ~90% opposite leg +/- isometric strength test Absolutely if the patient/therapist has access
78 My experience Over 80 with more than 2 years follow-up 2 Failures in under 18 at time of surgery No growth arrests partial or complete
79 Future Direction Expand age range to perform surgeries in kids with up to years remaining To this point only kids that have past peak height velocity (elbow closed) Investigate strength of fixation constructs Would like to avoid needing to use aperture screw fixation Decrease risk of growth arrest on Tibia Could use this graft in the all epiphyseal construct
80 Thank You
81 Femoral growth plate measurement.mov acl femoral seating1.mov Tibial seating.mov
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